One-pot synthesis of l-dopa-functionalized water-dispersible magnetite nano-palladium catalyst and its application in the Suzuki and Heck reactions in water: a novel and highly active catalyst

Abstract

A palladium catalyst supported on water-dispersible magnetite nanoparticles end-functionalized with amino and carboxyl groups was successfully prepared by a facile one-pot template-free method combined with a metal adsorption–reduction procedure. It was characterized by TEM, XRD, XPS, FT-IR and VSM. This catalyst exhibits excellent catalytic activity for Suzuki and Heck reactions in water. Furthermore, the newly developed catalyst is easy to be recovered and recycled by magnetic separation from aqueous phase reactions. More importantly, the catalyst revealed high efficiency and high stability under the reaction conditions and during recycling stages. This catalyst can be used consecutively six times without significant loss in catalytic activity.